Using Player State?

Hi…i try all things that you say…but cast always fail in widget…

1 - I create all bleprints you say

2 - setup my project to work with this like you can see on screens below:

3 - Create interface functions

4 - Setup player state blueprint to implement the MMOInterface functions and create variables check “Editable”…lillte eyeball checked

5 - Setup level blueprint to show my interface
6 - Implemented the widget function that say what to do when i press button on widget

But…always fail the cast…need to put some delay?
If you wanna…I can share my screen to show the problem and what I alright doing.